render( $this->extract_params_from_iframe_src( $url ), $url );
}
/**
* Filter oEmbed HTML for SoundCloud to convert to AMP.
*
* @param string $cache Cache for oEmbed.
* @param string $url Embed URL.
* @return string Embed.
*/
public function filter_embed_oembed_html( $cache, $url ) {
if ( false === strpos( wp_parse_url( $url, PHP_URL_HOST ), 'soundcloud.com' ) ) {
return $cache;
}
return $this->parse_amp_component_from_iframe( $cache, $url );
}
/**
* Parse AMP component from iframe.
*
* @param string $html HTML.
* @param string|null $url Embed URL, for fallback purposes.
* @return string AMP component or empty if unable to determine SoundCloud ID.
*/
private function parse_amp_component_from_iframe( $html, $url = null ) {
$props = $this->match_element_attributes( $html, 'iframe', [ 'src', 'title', 'width', 'height' ] );
if ( ! isset( $props ) || empty( $props['src'] ) ) {
return $html;
}
$src = html_entity_decode( $props['src'], ENT_QUOTES );
$query = [];
parse_str( wp_parse_url( $src, PHP_URL_QUERY ), $query );
if ( empty( $query['url'] ) ) {
return $html;
}
$props = array_merge(
$props,
$this->extract_params_from_iframe_src( $query['url'] )
);
if ( isset( $query['visual'] ) ) {
$props['visual'] = $query['visual'];
}
if ( $url && ! empty( $props['title'] ) ) {
$props['fallback'] = sprintf(
'%s',
esc_url( $url ),
esc_html( $props['title'] )
);
}
return $this->render( $props, $url );
}
/**
* Render embed.
*
* @param array $args Args.
* @param string $url Embed URL for fallback purposes. Optional.
* @return string Rendered embed.
*/
public function render( $args, $url ) {
$args = wp_parse_args(
$args,
[
'track_id' => false,
'playlist_id' => false,
'height' => null,
'width' => null,
'visual' => null,
'fallback' => '',
]
);
$this->did_convert_elements = true;
$attributes = [];
if ( ! empty( $args['track_id'] ) ) {
$attributes['data-trackid'] = $args['track_id'];
} elseif ( ! empty( $args['playlist_id'] ) ) {
$attributes['data-playlistid'] = $args['playlist_id'];
} elseif ( $url ) {
return $this->render_embed_fallback( $url );
} else {
return '';
}
if ( isset( $args['visual'] ) ) {
$attributes['data-visual'] = rest_sanitize_boolean( $args['visual'] ) ? 'true' : 'false';
}
$attributes['height'] = $args['height'] ?: $this->args['height'];
if ( $args['width'] ) {
$attributes['width'] = $args['width'];
$attributes['layout'] = 'responsive';
} else {
$attributes['layout'] = 'fixed-height';
}
return AMP_HTML_Utils::build_tag(
'amp-soundcloud',
$attributes,
$args['fallback']
);
}
/**
* Render embed fallback.
*
* @param string $url URL.
* @return string Fallback link.
*/
private function render_embed_fallback( $url ) {
return AMP_HTML_Utils::build_tag(
'a',
[
'href' => esc_url_raw( $url ),
'class' => 'amp-wp-embed-fallback',
],
esc_html( $url )
);
}
/**
* Get params from Soundcloud iframe src.
*
* @param string $url URL.
* @return array Params extracted from URL.
*/
private function extract_params_from_iframe_src( $url ) {
$parsed_url = wp_parse_url( $url );
if ( preg_match( '#tracks/(?P\d+)#', $parsed_url['path'], $matches ) ) {
return [
'track_id' => $matches['track_id'],
];
}
if ( preg_match( '#playlists/(?P\d+)#', $parsed_url['path'], $matches ) ) {
return [
'playlist_id' => $matches['playlist_id'],
];
}
return [];
}
}